Windows 10 build 14915 breaks WiFi on older Surface Pro devices

If you're a Surface Pro 1 or Surface Pro 2 user and planning on upgrading to the latest Insider Preview build, we've got some bad news for you. Build 14915 is breaking the WiFi adapter on a number of older Surface Pro devices, and it doesn't look like there's a fix for it.
A number of Surface Pro 1 and Surface Pro 2 users, including me, are experiencing this issue. Some users have said that reverting back to the previous build fails too, so the only real fix right now is to clean install a production build.